Abstract
Thermomagnetic coefficients in a strong magnetic field (ω c τ≫1, ω c the cyclotron frequency and τ an appropriate relaxation time of electrons) are calculated by the method of the thermal Green function. Taking into account the interaction energy carried by an electron, we can correct the expression for the symmetric part of the thermomagnetic coefficients obtained by Ansel'm and Askerov. As a result, the symmetric part does not disturb the third law of thermodynamics. The resulted expression is used to discuss the magneto-oscillation of the thermoelectric power of Bi. The magnetic field dependence of the amplitude of the oscillation is investigated and shown not so simple as was proposed by Steele and Babiskin who showed that the amplitude is proportional to H 5/2 ( H is the magnetic field strength) according to their experimental data.
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